"You always hope that its not somebody that you know, but it's such a small close-knit community, you're bound to know them," Michaela Blain said. "To find out its somebody so near and dear to my heart, it was definitely hard."

Blain knew Reiffer from a church youth group where she was a sponsor. Reiffer leaves behind a husband and three children.

"She meant a lot to me," Blain said. "There were times when I was going through some hard times, my mom passed away when I was little, so she was one of those people that clung to me almost and just wanted to be there and support me through all my decisions.

"She was very important to me, absolutely."

Reiffer was hit while riding her bike.

"It's heartbreaking especially because we don't know who did it and we just want answers," Blain said.

Police believe the car involved is a 1998 to 2004 Chrysler Concorde. They don't know the color of the car but believe it has heavy front-end damage from the crash.

While authorities continue to search for the car, those who knew Reiffer are hoping the driver does the right thing.

"Its not worth it," Blain said. "You're going to feel guilt for the rest of your life. There's so much freedom in just coming forward."

If you do see that car they're looking for, you are urged to contact the Barry County Sheriff's Office.